Vehicle Does Not Enter AWD Mode

Vehicle Does Not Enter AWD Mode Even Though AWD Warning Lamp Turned to OFF
DIAGNOSTIC PROCEDURE
1. CHECK AWD SOLENOID
Check AWD solenoid. Refer to COMPONENT INSPECTION.
OK or NG
OK >> GO TO 2.
NG >> Replace electric controlled coupling for malfunction of AWD solenoid. Refer to Disassembly and Assembly.

2. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to AWD Control Unit Input/Output Signal Reference Values.
OK or NG
OK >> GO TO 3.
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

3. SYMPTOM CHECK
Check again.
OK or NG
OK >> INSPECTION END
NG >> Replace electric controlled coupling for mechanical malfunction (mechanical engagement of clutch is not possible.). Refer to Disassembly and Assembly.